21854777

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{541}}^1$

素因数の和:776

約数の個数: 16

約数和(自身を含む): 26016000

約数和(自身を除く): 4161223

約数列:

[1, 7, 29, 199, 203, 541, 1393, 3787, 5771, 15689, 40397, 107659, 109823, 753613, 3122111, 21854777]

約数ペア:

[(1, 21854777), (7, 3122111), (29, 753613), (199, 109823), (203, 107659), (541, 40397), (1393, 15689), (3787, 5771)]